I was playing around with SlimDX and I can't remember now why I kept looking for something else. I do like the cross-platform-ability of OpenTK/GL if I ever switch over to a linux based system. With OpenTK I can place a GLControl object on my form and it becomes the rendering window, similar to SlimDX and using a picturebox handle.
I will try to pursue my project using OpenTK (OpenGL) in my Visual C# 2010 project. I am reading through "OpenGL SuperBible, Fourth Edition" and some of the glut references are simple to convert to OpenTK but others are not. Does anyone know of a glut-to-OpenTK comparison/conversion resource?